CAS 1006-39-9 is a key fluorinated aromatic intermediate widely used in pharmaceutical, agrochemical, and organic synthesis. As a halogenated acetophenone derivative, it contains reactive bromine, fluorine, and ketone groups, enabling versatile functionalization via nucleophilic substitution, coupling reactions (Suzuki/Mizoroki–Heck), and condensation. It serves as a critical precursor for synthesizing selective serotonin reuptake inhibitors (SSRIs), anti-inflammatory agents, and anti-cancer drugs, where the 2-bromo-4-fluorophenyl moiety enhances metabolic stability and target binding affinity. In agrochemicals, it is used to prepare fluorinated herbicides and fungicides with improved bioactivity and environmental safety. It also acts as a building block for liquid crystal materials and fluorescent dyes, leveraging its aromatic conjugation and halogen substituents to tune optical and electrical properties.

Classified as GHS07 (H315, H319, H335); irritant, low acute toxicity. Inhalation: Dust/vapor irritates respiratory tract (cough, throat irritation); use local exhaust and dust mask. Skin Contact: Causes mild irritation (redness, itching); wear nitrile gloves, wash skin with soap and water after handling. Eye Contact: Causes severe irritation (stinging, tearing, redness); wear safety goggles, rinse eyes with water for ≥15 minutes and seek medical help if needed. Ingestion: May cause nausea, vomiting, abdominal discomfort; do not induce vomiting, drink water and seek medical aid. Chemical Hazards: Stable under normal conditions; avoid strong oxidants, strong bases, and high temperatures (>150 °C), which may cause decomposition and release toxic fumes (HBr, HF). Storage: Keep in cool, dry, well-ventilated area in tightly sealed containers; separate from incompatible substances. Disposal: Dispose of waste per local hazardous waste regulations; avoid release to environment.